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S t 2t

S t 2tS t 2tS t 2tS t 2tS t 2tS t 2t
S t 2tS t 2tS t 2tS t 2tS t 2tS t 2t
S t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2tS t 2t